Method test_assignment_behavior

Lib/test/test_functools.py:2898–2909

(self)

        self.assertEqual(a.t(0.0), 0.0)

    def test_assignment_behavior(self):
        # see gh-106448
        class A:
            @functools.singledispatchmethod
            def t(arg):
                return arg

        a = A()
        a.t.foo = 'bar'
        a2 = A()
        with self.assertRaises(AttributeError):
            a2.t.foo

    def test_classmethod_register(self):
        class A: